Loom harness



1951 F. H. KAUFMANN 2,570,815

LOOM HARNESS Filed June 21, 1950 F155 Fll14- FIEILEI INVENTOR. FRANKH.KAUFMANN ATTORNEY Patented Oct. 9, 1951 'UNITED STATES PATENT QFFICELOOM HARNESS sylvania Application June 21, 1950, Serial No. 169,493

9 Claims.

This invention relates to loom harness, and it relates more particularlyto the construction and arrangement of the frames, and the parts carriedthereby, used for supporting the heddles which separate the warp endsinto successive. sheds for the passage of the shuttle therebetween toeffect the weaving operation.

Heretofore most of the frames, used in looms for supporting the heddles,were made with top and bottom rails or shafts of wood, connected attheir ends by side struts, usually made of metal strips secured to theends of the top and bottom rails or shafts.

By reason of the present availability of light metal alloys of aluminumor magnesium, it has been suggested to substitute, for the top andbottom rails made of wood, rails or shafts made of light metal alloyswhich are extruded through dies in the desired shape in cross-section,the same preferably being made hollow for economy of metal anddiminution of weight.

However, the metal of which said rails or shafts are made is relativelysoft, and certain difiiculties have arisen in the use of such metallicrails or shafts, principally in connection with the means for supportingthe heddle rods in the frames intermediate the ends thereof.

It has also been suggested to provide rails or shafts, in which the mainor body portion is made of wood, having metallic parts mounted on one orboth edges thereof, which may also be made of extruded metal alloys, buthere again similar difficulties have arisen.

The principal object of the present invention is to provide a novel andeilicient form of heddle frame in whichthe top and bottom rails orshafts may be made wholly or in part of extruded metal shapes, whichframe is so constructed and arranged, and the parts thereof so shaped,asto provide improved means for supporting the heddle rods intermediatethe ends thereof.

A further object of the present invention is to provide, in a heddleframe of the character aforesaid, improved means for supporting theheddle rods intermediate their ends, which will permit the use of slidehooks of usual, ordinary, and accepted types, whereby the heddles may besupported on the rods in such manner as to be permitted a sufficientsidewise displacement in. the frame whenever necessary for theprevention of warp streaks in the cloth being woven.

The nature and characteristic features of the present invention will bereadily understood from the following description, taken in connec- 2tion with the accompanying drawing, forming part hereof, in which:

Figure 1 is a front elevation of a loom harness frame embodying the mainfeatures of the pres- 5 ent invention;

Fig. 2 is a fragmentary view, enlarged, of a portion of the structureshown in Fig. 1;

Fig. 3 is a transverse section, further enlarged, taken on the line 33of Fig. 2;

Fig. 4 is a view similar to Fig. 3, the section, however, being taken onthe line 4-4 of Fig. 2; and

Fig. 5 is a sectional view, similar to Fig. 3, illustrating a modifiedform of the invention in which the main or body portion of the railismade of wood, having mounted on its inner edge a metallic member forutilizing the features of the present invention.

It should, of course, be understood that the description and drawingherein are illustrative merely, and that various modifications andchanges may be made in the structure disclosed without departing fromthe spirit of the invention.

Referring now more particularly to Figs. 1 to 4 of the drawing, the topand bottom rails or shafts ll] of the frameare connected at their endsbymeans of side struts I I. In this instance the side struts Il may be,and preferably are, .made of wood, whereas the top and bottom rails orshafts III are made of extruded metal shapes, preferably hollow, wherebythey are provided with relatively thin side walls I2, and outer marginalportions I3, somewhat thicker than the sidewalls l2.

The outer marginal portion 13 of each of the top and bottom rails .H] isprovided with a V- shaped groove l4, extending from end to end of therail H1, exteriorly disposed, so that there is thus provided a drillpoint guide for drilling through the portion l3 at any required locationin the length thereof wherever it may be desired to mount a hook l5 forconnecting the actuating cord or straps (not. shown), which are used forraising and lowering the frames in the loom in the usual and customarymanner.

Extending inwardly from the inner marginal portion of each rail or shaftIt, toward the center of the frame, is a longitudinal hollow rib Hi, theoverall thickness of which is preferably somewhat less than that of themain or body portion of the rail In.

The rib it being made hollow, has a portion of the interior thereofshaped as at I! complemental to, and for the purpose of receiving, a

metal rod I8 which extends from end to end in the frame, and theremaining portion of the rib I6 is also preferably made hollow as at I9for the purpose of lightening the structure.

At each of the locations where it is desired to mount a slide hook 20for the purpose of supporting the heddle rod 2| intermediate its ends, aportion of the rib I6 is cut away as at 22 by milling or other suitableprocess whereby a portion of said rod I8 is exposed to provide a portionon which may be mounted the slide hook 20, of any suitable type, suchfor example, as shown and described in the Kaufmann Patent No.2,301,628, issued November 10, 1942, although any other type of slidehook, which may be adaptable, may be used at these places in the frame.

The slide hooks 20 serve to support the heddle rods 2| intermediatetheir ends, and the ends of the heddle rods 2| may be mounted andsecured at the side strut II of the frame in anyv preferred manner. Theheddles 23 are of any preferred type, preferably one of the standardforms of flat steel heddles, such as are now commonly used for weaving.

The ends of the rod I8 for supporting the slide hooks 20 may be confinedwithin the frame by the side struts I I, although, if desired, a portionof the rib I6 may be cut away at either or both ends as indicated at 24at the right hand end of Fig. 1, whereby the ends of the rod [8 may besprung outward until they clear the end strut after which they may bepulled lengthwise to release the slide hooks 20 which are mountedthereon, and in this manner the heddle rods with the heddles mountedthereon may be removed from the frame.

However, other means for confining and re-- leasing the ends of the rodsI8 may be readily devised whereby the same may be easily andconveniently removed from the frame for the foregoing purpose.

In Fig. 5 of the drawing there is shown a modified form of the inventionin which the main or body portion of the rail II! is made of wood havinga metallic member IO'P secured to the inner edge thereof in a mannersimilar to that shown in the application for Letters Patent of John J.Ka-ufmann, filed August 31, 1949, Serial No. 113,429.

In the present instance the metallic member III comprises a longitudinalstrip having'an internal groove or channel thereby providing two sidewalls IZ The inner face of-each of the side walls is inclined withrespect to the vertical central axis of the cross-section, whereby thegroove or channel is internally tapered. The inner marginal part of thebody portion II! of the rail is shaped complementally to the interna]groove of the strip IIl so as to snugly fit into said groove.

The metallic member I 9* may be secured to the main or body portion Illof the rail in any preferred manner, as for example, by means of one ofthe adhesives as at I2 which are now available for effectively securingmetal to wood.

The metallic member III is provided with a longitudinal rib I6 on itsinner edge portion, said rib IE3 having a rod I8 mounted therein in thesame manner as shown in the other or preferred form of the invention.

I claim:

1. A loom harness comprising top and bottom rails connected at theirends by side struts, each of said rails having a hollow metallic ribportion along its inner edge extending inwardly toward the center of theframe, a metallic rod positioned in the interior of said rib, portionsof said rib being recessed at certain locations to expose the interiorlymounted rod for portions of its length, slide hooks mounted on theexposed portions of said rods, heddle rods supported intermediate theirends by said slide hooks, and heddles mounted on said rods.

2. A loom harness comprising top and bottom rails connected at theirends by side struts, each of said rails having a hollow metallic ribportion along its inner edge extending inwardly toward the center of theframe, a metallic rod removably positioned in the interior of said rib,portions of said rib being recessed at certain 10- cations to expose theinteriorly mounted rod for portions of its length, slide hooks mountedon the exposed portions of said rods, heddle rods supported intermediatetheir ends by said slide hooks, and heddles mounted on said rods.

3. A loom harness comprising top and bottom rails connected at theirends by side struts, each of said rails having a hollow metallic ribportion along its inner edge extending inwardly toward the center of theframe, a metallic rod positioned in the interior of said rib, portionsof said rib being recessed at certain locations to expose the interiorlymounted rod for portions of its length, slide hooks mounted on theexposed portions of said rods, heddle rods supported intermediate theirends by said slide hooks, and heddles mounted on said rods, and aportion of the rib being recessed to permit said rod to be withdrawnfrom the rib in which it is mounted.

4. A loom harness comprising top and bottom rails connected at theirends by side struts, each of said rails having a hollow metallic ribportion along its inner edge extending inwardly toward the center of theframe, a metallic rod positioned in the interior of said rib, portionsof said rib being recessed at certain locations to expose the interiorlymounted rod for portions of its length, slide hooks mounted on theexposed portions of said rods, heddle rods supported intermediate theirends by said slide hooks, and heddles mounted on said rods, and aportion of the rib being cut away adjacent the end of the rod in Whichthe slide hooks are mounted thereby to permit said rod to be withdrawnfrom the rib in which it is mounted.

5. A loom harness comprising hollow metallic top and bottom railsconnected at their ends by side struts, each of said rails having ahollow rib portion along its inner edge extending inwardly toward thecenter of the frame, a metallic rod positioned in the interior of saidrib, portions of said rib being recessed at certain locations to exposethe interiorly mounted rod for portions of its length, slide hooksmounted on the exposed portions of said rods, heddle rods supportedintermediate their ends by said slide hooks, and heddles mounted on saidrods.

6. A loom harness comprising hollow metallic top and bottom railsconnected at their ends by side struts, each of said rails having ahollow rib portion along its inner edge extending inwardly toward thecenter of the frame, a metallic rod removably positioned in the interiorof said rib, portions of said rib being recessed at certain locations toexpose the interiorly mounted rod for portions of its length, slidehooks mounted on the exposed portions of said rods, heddle rodssupported intermediate their ends by said slide hooks, and heddlesmounted on said rods.

7. A loom harness comprising hollow metallic top and bottom railsconnected at their ends by side struts, each of said rails having ahollow rib portion along its inner edge extending inwardly toward thecenter of the frame, a metallic rod positioned in the interior of saidrib, portions of said rib being recessed at certain locations to exposethe interiorly mounted rod for portions of its length, slide hooksmounted on the exposed portions of said rods, heddle rods supportedintermediate their ends by said slide hooks, and heddles mounted on saidrods, and a portion of the rib being recessed to permit said rod to bewithdrawn from the rib in which it is mounted.

8. A loom harness comprising hollow metallic top and bottom railsconnected at their ends by side struts, each of said rails having ahollow rib portion along its inner edge extending inwardly toward thecenter of the frame, a metallic rod positioned in the interior of saidrib, portions of said rib being recessed at certain locations to exposethe interiorly mounted rod for portions of its length, slide hooksmounted on the exposed portions of said rods, heddle rods supportedintermediate their ends by said slide hooks, and heddles mounted on saidrods, and a portion of the rib being recessed adjacent the end of therod on which the slide hooks are mounted thereby to permit said rod tobe withdrawn from the rib in which it is mounted.

9. A loom harness comprising top and bottom rails connected at theirends by side struts, each of said rails having its main or body por tionmade of wood, and having a hollow metallic member mounted along itsinner edge, said metallic member having a hollow rib portion extendinginwardly toward the center of the frame, a metallic rod positioned inthe interior of said rib, portions of said rib being recessed at certainlocations to expose the interiorly mounted rod for portions of itslength, slide hooks mounted on the exposed portions of said rods, heddlerods supported intermediate their ends by said slide hooks, and heddlesmounted on said rods.

FRANK I-I. KAUFMANN.

REFERENCES CITED The following referen es are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 489,631 Grob Jan. 10, 18931,551,732 Colman Sept. 1, 1925 2,216,682 Zurcher et al Oct. 1, 19402,461,497 Kaufmann Feb. 8, 1949 FOREIGN PATENTS Number Country I Date6,124 Great Britain of 1903

